Aging device for catalytic converter in vehicle and method thereof
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorChibum IN
Life of this patent
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Abstract
An aging device of a catalytic converter of a vehicle simulates wear-and-tear of a catalytic converter under conditions that simulate to those of a real vehicle by injecting an oil additive or an engine oil mixture containing phosphor (P), zinc (Zn), and etc., into an engine.
Claims29
An aging device of a catalytic converter of a vehicle, comprising:
- an engine for bench testing;
- a first valve through which an oil additive or an engine oil mixture is injected into the engine, the first valve disposed in an intake line through which intake air flows;
- a pump that pressurizes and transmits the oil additive or the engine oil mixture from a storage tank to the first valve;
- a catalytic converter that is disposed in an exhaust pipe through which exhaust gas that is combusted in the engine is exhausted out of the engine;
- a second valve through which atmospheric air is introduced so as to produce a secondary combustion of unburned exhaust gas, the second valve disposed in the exhaust pipe upstream of the catalytic converter;
- and
- a control apparatus that operates thermal and contamination aging of the catalytic converter in a bench test state of the engine under conditions that simulates the operational state of a vehicle.
An aging device of a catalytic converter of a vehicle, the aging device including an engine for bench testing, the aging device further comprising:
- a first valve that supplies an air-intake line with a contamination material;
- a catalytic converter disposed in an exhaust pipe through which exhaust gas flows from the engine;
- a second valve through which atmospheric air flows into the exhaust pipe upstream from the catalytic converter,
- a controller for controlling the engine, the first valve, and the second valve to perform thermal aging and contamination aging of the catalytic converter.
A method for aging a catalytic converter of a vehicle, comprising:
- a first process that injects contamination material into an engine to simulate aging of a catalytic converter;
- a second process that operates the engine under a first air/fuel ratio;
- a third process that holds the temperature of the catalytic converter lower than a base temperature for a predetermined period;
- a fourth process that operates the engine under a air/fuel ratio;
- a fifth process that holds a high temperature of the catalytic converter higher than the base temperature for another predetermined period by supplying air to the catalytic converter;
- and
- a sixth process that determines whether a predetermined period in an experiment has passed, and repeatedly operates the second, third and fourth processes when the predetermined period has not passed.
A method for aging a catalytic converter through an engine bench tests, the method comprising:
- (a) a supplying process that supplies a contamination material through an intake line, the amount of contamination material based upon exhaust amount and durability of the engine;
- (b) an aging process that ages the catalytic converter for a predetermined period under normal driving conditions by operating the engine under a theoretical air/fuel ratio;
- and
- (c) an aging process that ages the catalytic converter for a predetermined period under severe driving conditions by operating the engine under a rich fuel condition,
- wherein the aging processes are repeatedly and alternatively performed under normal driving conditions and under severe driving conditions for a predetermined experimental period.
Dependencies are inferred from the claim text.